Sigenergy SigenStor Solar Battery
Sigenergy has become one of the fastest-growing home battery brands in Australia, and it’s easy to see why homeowners are asking about the SigenStor by name. It’s a modular lithium iron phosphate (LFP) battery system with a built-in hybrid inverter, designed to be installed as one integrated unit rather than a battery bolted onto a separate inverter.
Solar National installs and supports Sigenergy SigenStor systems across Sydney and NSW, alongside our full range of home solar batteries, with our CEC-accredited team handling everything from system sizing to installation and warranty support.
What Is the Sigenergy SigenStor Battery?
The SigenStor is a modular, all-in-one energy system that combines an LFP battery with a built-in hybrid inverter in a single stackable tower. Sigenergy launched the SigenStor in Australia in late 2023 and it has quickly become one of the most talked-about batteries in the market, taking second place in installers’ own 2025 “which battery would you install on your own home” poll.
Modular, stackable capacity
built from 5kWh and 8kWh battery modules (plus newer 6kWh and 10kWh options), stackable up to six units high. Most Sydney homes land in the 16–24kWh sweet spot. If you’re unsure what size you need, our guide on how to choose the right solar battery for your energy needs walks through the calculation.
LFP chemistry
rated for around 6,000 charge cycles, translating to 15+ years of typical daily use.
Integrated hybrid inverter
single-phase models in 5kW, 6kW, 8kW and 10kW AC ratings; three-phase in 5kW, 10kW, 15kW and 25kW. Unlike batteries that require a separate solar inverter, everything is contained in the one unit.
Built-in bi-directional DC EV charger
one of the only home batteries that can charge an EV directly from solar via DC, without the conversion losses of a standard AC wall charger.
Fast backup switchover
around 5 milliseconds to switch to backup power during a blackout.
App-based AI energy management
real-time monitoring and automated optimisation via the Sigen app. Sigenergy systems are also well suited to virtual power plant (VPP) participation, which can earn you additional credits for exporting stored energy at peak times.
A note on the 2025 recall: Sigenergy issued a voluntary recall on certain single-phase energy controllers due to an AC terminal connection issue. It affected the controller, not the battery cells, and Sigenergy resolved it with free replacements plus extended warranty cover for affected customers. Units installed today ship with the fix.
Sigenergy vs Sungrow: Which Battery Is Right for You?
Both are strong LFP batteries Solar National installs, and both carry a 10-year product warranty. The practical differences come down to flexibility versus simplicity:
Sigenergy SigenStor | ||
Inverter | Integrated into the battery unit | Requires a separate compatible Sungrow hybrid inverter |
Capacity range | Modular, roughly 8–48kWh+ | Modular, roughly 9.6–25.6kWh |
EV charging | Built-in bi-directional DC charger | Not included |
Warranty | 10 years, 70% capacity retention | 10 years, 60–80% retention depending on model |
Both are genuinely good options. If you want a straightforward, well-proven solar-plus-battery stack, the Sungrow solar battery is hard to fault. If you want EV charging built in and maximum room to expand, Sigenergy edges ahead.
For a wider view across every brand we install, see our full solar battery comparison.
Is a Sigenergy Battery Right for Your Home?
A Sigenergy SigenStor tends to suit households that:
- Want to start around 16kWh and expand capacity later without replacing the whole system
- Own or plan to own an EV and want to charge it directly from solar
- Prefer a single integrated unit over managing separate battery and inverter warranties
- Are eligible for the federal Cheaper Home Batteries Program rebate
Indicative pricing (Sydney, installed): A 16kWh SigenStor starts from around $12,100 installed, dropping to roughly $7,980 after the federal rebate. The popular 24kWh system typically lands around $8,600 after rebate.
The rebate is now tiered by battery size, so the amount you receive depends on your capacity — our breakdown of NSW solar rebates explains how it works and what else you may be eligible for.
Why Install Your Sigenergy Battery with Solar National
Solar National is a CEC-accredited, Australian-owned solar and battery installer based in Chatswood, servicing Sydney and NSW. Our team handles the full process — system design, government rebate paperwork, installation, and ongoing warranty support — so you’re not left managing multiple suppliers if something needs attention down the track.
Our Accreditations
Frequently Asked Questions
Sigenergy has grown quickly in Australia since its 2023 launch, on the strength of its modular design, integrated hybrid inverter, and built-in EV charging. It placed second in installers’ own 2025 poll on which battery they’d choose for their own home. See how it stacks up against other brands in our roundup of the best home solar batteries.
10 years on the battery and energy controller, covering a minimum 70% retained usable capacity (or a set minimum energy throughput, whichever comes first). The gateway carries 5 years; the power sensor and communications modules carry 2 years.
A 16kWh SigenStor installed in Sydney starts from around $12,100, or approximately $7,980 after the federal rebate. The 24kWh system typically comes in around $8,600 after rebate. Final pricing depends on your energy use, switchboard setup, and whether you’re on single-phase or three-phase power.
Both are strong LFP systems with a 10-year warranty. The Tesla Powerwall 3 has a fixed 13.5kWh capacity and a longer Australian track record; Sigenergy is modular, expandable, and uniquely includes a built-in bi-directional EV charger. Solar National installs both.
Both are modular and expandable. The key difference is that the BYD Battery-Box pairs with a separate hybrid inverter of your choice (Fronius, GoodWe, Sungrow and others), while Sigenergy has its inverter built in. BYD offers a higher capacity-retention warranty (80% vs 70%); Sigenergy offers EV charging and a simpler single-unit install.
Yes. Sigenergy batteries installed by a CEC-accredited installer like Solar National are eligible for the federal Cheaper Home Batteries Program, on the same tiered basis as other approved brands.
